It's good to know there're a lot of old geezers here...besides me. I remember listening to almost every show mentioned above.
Packy was indeed the name Straight Arrow's side kick. I collected Injunuity Cards for a while.
I had a Tom Mix arrowhead with whistle, magnifying glass and compass from Shredded Ralston (now Wheat Chex, and not a Ralston product)
My favorite premium was an Atomic Bomb ring from the Lone Ranger. It flicked in the dark.
I also had a Superman tin button from Pep Cereal. (Bud Collyer, who played the dual role of Supe and Clark Kent would suddenly deepen his voice to speak Supermanese)
In 1949 or '50, my favorite show, a summer replacement, was Johnny Lujack, All-American--who really was a Notre Dame all-american, and later a star quarterback for the Chicago Bears.
Oh, the orgy of long ago memories! Stop me before I have more.
John OTSC (who is well into medicare years)